158 IMPORTANT VARIETIES OF FISSION-FUNGI 



what elevated, moist, of consistency of butter ; sulphur- 

 to chrome-yellow (3, in). 



Agar Streak. — Similar ; water of condensation clear ; 

 whitish-yellow precipitate (3, n). 



Bouillon Culture. — Clear ; abundant sediment. 



Milk. — Coagulated after forty-eight hours. 



Potato Culture. — Wavy surface growth, often much 

 elevated, shining, especially in old cultures having larger 

 or smaller elevations ; in young cultures with a moist lus- 

 ter, later dull, sulphur-, chrome- and more rarely grayish- 

 yellow, limited to the line of inoculation, only extending 

 a little more widely after a long time (3, ix). 



Chemical Activities. — In peptone-bouillon there is 

 formed some H 2 S and a trace of indol. The yellow pig- 

 ment is a lipochrome. In grape-sugar bouillon some acid 

 is formed. 



Distribution. — Very common variety in the surround- 

 ings of men, especially in the air. In Wiirzburg every 

 plate from air contained it. 



Remarks. — 



The numerous forms isolated by Dr. Stubenrath which belong here, 

 we group under the following varieties : 



(a) Typica (Lehmann and Stubenrath). The colony on gelatin 

 may be recognized upon the plate by a marked cleaving of the border, 

 and even with progressing liquefaction of the gelatin the round form 

 is not essentially changed. 



(ft) Compacta (Lehmann and Stubenrath). The colonies on the 

 gelatin plate are very luxuriant, roundish, and so compact that a bor- 

 der-zone can not be distinctly seen. As this form also causes almost 

 no liquefaction of gelatin, the colonies lie upon the plate as a tough 

 film in the scarcely depressed gelatin. 



(y) Diffluens (Lehmann and Stubenrath). This form shows upon 

 all nutrient media a very marked tendency to spread out. Upon gel- 

 atin plates, which are liquefied quite rapidly, the colony spreads as a 

 very much fissured, readily disintegrating mass. 



Sarcina equi (Stubenrath). 



In all respects similar to the Sarc. lutea, but is differentiated: 



1. By medium-sized granules, not coarse granules, in the gelatin 

 plate. 



2. Less perfectly formed bales of packets. 



3. More grayish-yellow color on all nutrient media; little lique- 

 faction. 



Found repeatedly by Dr. Stubenrath in the urine of various horses 



